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© Martin Grandjean My favorite bartenders always remember my name. They know what I like and how to talk to me. I expect that from them and, in return, I frequent the bars where they work. There’s nothing worse than being treated like a total stranger at a bar that I’ve been visiting for years. E-commerce is no different. Companies have data — knowledge about my preferences from past experience — and they use it to provide me better, more personal service.....